iw_cxgb4: provide detailed driver-specific MR information

Add a table of important fields from the fw_ri_tpte structure to the mr
resource tracking table.  This is helpful in debugging.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/cxgb4/restrack.c b/drivers/infiniband/hw/cxgb4/restrack.c
index 013524a093cf86243d6a9ad99ba9c71817d0b951..9a7520ee41e0f125a53e340e739df74a6cd1757b 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/restrack.c
+++ b/drivers/infiniband/hw/cxgb4/restrack.c
@@ -433,8 +433,69 @@ err:
        return -EMSGSIZE;
 }
 
+static int fill_res_mr_entry(struct sk_buff *msg,
+                            struct rdma_restrack_entry *res)
+{
+       struct ib_mr *ibmr = container_of(res, struct ib_mr, res);
+       struct c4iw_mr *mhp = to_c4iw_mr(ibmr);
+       struct c4iw_dev *dev = mhp->rhp;
+       u32 stag = mhp->attr.stag;
+       struct nlattr *table_attr;
+       struct fw_ri_tpte tpte;
+       int ret;
+
+       if (!stag)
+               return 0;
+
+       table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
+       if (!table_attr)
+               goto err;
+
+       ret = cxgb4_read_tpte(dev->rdev.lldi.ports[0], stag, (__be32 *)&tpte);
+       if (ret) {
+               dev_err(&dev->rdev.lldi.pdev->dev,
+                       "%s cxgb4_read_tpte err %d\n", __func__, ret);
+               return 0;
+       }
+
+       if (rdma_nl_put_driver_u32_hex(msg, "idx", stag >> 8))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u32(msg, "valid",
+                       FW_RI_TPTE_VALID_G(ntohl(tpte.valid_to_pdid))))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u32_hex(msg, "key", stag & 0xff))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u32(msg, "state",
+                       FW_RI_TPTE_STAGSTATE_G(ntohl(tpte.valid_to_pdid))))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u32(msg, "pdid",
+                       FW_RI_TPTE_PDID_G(ntohl(tpte.valid_to_pdid))))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u32_hex(msg, "perm",
+                       FW_RI_TPTE_PERM_G(ntohl(tpte.locread_to_qpid))))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u32(msg, "ps",
+                       FW_RI_TPTE_PS_G(ntohl(tpte.locread_to_qpid))))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u64(msg, "len",
+                     ((u64)ntohl(tpte.len_hi) << 32) | ntohl(tpte.len_lo)))
+               goto err_cancel_table;
+       if (rdma_nl_put_driver_u32_hex(msg, "pbl_addr",
+                       FW_RI_TPTE_PBLADDR_G(ntohl(tpte.nosnoop_pbladdr))))
+               goto err_cancel_table;
+
+       nla_nest_end(msg, table_attr);
+       return 0;
+
+err_cancel_table:
+       nla_nest_cancel(msg, table_attr);
+err:
+       return -EMSGSIZE;
+}
+
 c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX] = {
        [RDMA_RESTRACK_QP]      = fill_res_qp_entry,
        [RDMA_RESTRACK_CM_ID]   = fill_res_ep_entry,
        [RDMA_RESTRACK_CQ]      = fill_res_cq_entry,
+       [RDMA_RESTRACK_MR]      = fill_res_mr_entry,
 };